Improvement in photographic printing-frames



E M. SEITZ. Photographic Printing-Frame.

No. 205,146. Patented June18,1878.

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N.PETEWS, PHOTO LITHOGRAPHER WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

EARL M. SEITZ, OF PHILADELPHIA PENNSYLVANIA.

IMPROVEMENT IN PHOTOGRAPHIC PRlNTlNG F RAMEs.

Specification forming part of Letters Patent No. 205,146, dated June18,1878 application filed January 31, 1878.

To all whom it may concern:

Be it known that I, EARL M. Sum, of the city and county of Philadelphia,and State of Pennsylvania, have invented a new and Improved Apparatusfor Photograph-Printing,

which improvement is fully set forth in the following specification andaccompanying drawings, in which- Figure 1 is a side elevation of theapparatus embodying my invention. Fig. 2 is a top or plan view thereof.Fig. 3 is a plan view of the frame employed. Fig. 4 is a transversesection thereof.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention relates to an improved c011- struction and arrangement ofparts in a machine for photographic printing, as hereinafter more fullydescribed and claimed.

Referring to the drawings, A represents a trestle or support, and B aphotographic printing-frame, which is j ournaled, as at a, to crossbars0, whose ends are provided with rollers b, adapted to run on the sidepieces of the trestle. Within the frame B there is fitted aplate ofglass, (7, and a pad, 6, and to the back of the frame there are hingedcleats D, on whose inner faces are pieces of rubber or springs f, whichbear firmly but softly against the pad 0 and, in order to hold thecleats in position, I employ hooks or other fastenings, g, which,

connectedp" to the frame B, engage with the cleats.

The operation is as follows: The frame sup ported on the cross-bars O isturned on its axis a so that the cleats D are uppermost. The cleats arenow thrown up and the pad e removed. The drawing to be copied isprepared, in any suitable manner, on tracing muslin, linen, paper, orother transparent material, is now placed on the glass (1, a piece ofsensitized paper laid against the drawing, the pad 6 rested against theback of the sensitized paper, and the cleats D are restored andfastened. During these manipulations the frame B is prevented fromturning by means of buttons h, pivoted to the cross-bars G. The buttonsh are now moved from the frame, and the latter rotated on its axis onthe bars C so that the glass cl is uppermost, the buttons h being againapplied to the frame. Then the frame, with the picture exposed, is runout on the trestle into the light, and the photographic printing of thepicture will then be accomplished, said picture being reproduced on thesensitized paper. The frame is afterward brought in and opened, the copyremoved, a fresh piece of sensitized paper applied, and the other statedoperations repeated.

It will be seen that pictures may be reproduced rapidly and cheaply andto an indefinite number of copies, and the apparatus possesses manyconveniences which will be appreciated by those familiar with the art.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a photographic printing apparatus in which the glass plate and padare secured within a reversible frame, the combination and arrangementof the hinged cleats D with springs f, adapted to bear against the pad,

and the frame B, pivoted to the bars 0, which are provided with wheelsand adapted to travel upon the trestle-work A, substantially as shownand described.

EARL M. SEITZ.

Witnesses JOHN A. WIEDERSHEIM, H. R. SHULrz.

